/**
 * Copyright 2010 - YangJiandong(chunquedong)
 * 
 * This file is part of ChunMap project
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE(Version >=3)
 * 
 * ChunMap是开源软件。你可以自由复制、传播本项目的下载包文件，但必须保持其完整性。
 * 我们不用对使用中的风险及由此造成的损失承担任何责任。
 * 详细情况请见《ChunMap许可协议》。
 * 
 * 想了解更多有关ChunMap的信息，请访问http://code.google.com/p/chunmap/
 * 
 * 下面此段程序作者YangJianDong(chunquedong)
 * 最后修改时间2010.7.17
 */
package chunmap.data.index;

import java.util.ArrayList;
import java.util.List;

import chunmap.data.feature.Feature;
import chunmap.data.feature.FeatureSet;
import chunmap.data.feature.Shape;
import chunmap.data.feature.VisitAction;
import chunmap.data.feature.VisitFunc;
import chunmap.model.elem.Envelope;

public class FeatureList extends FeatureSet{
	private List<Feature> _features;

    public FeatureList()
    {
        _features = new ArrayList<Feature>();
    }

    //------------------------------------------------------------------------
    @Override
    public void insert(Feature f)
    {
        _features.add(f);
    }
    
    @Override
    public boolean remove(Feature f)
    {
        return _features.remove(f);
    }
    
    @Override
    public void search(Envelope envelope, VisitFunc fun)
    {
        for (Feature f : _features)
        {
            if (envelope.hasIntersect(f.getEnvelop()))
            {
                if (!fun.execute(f)) break;
            }
        }
    }
    
    @Override
    public void select(Envelope envelope, VisitAction fun)
    {
        for (Feature f : _features)
        {
            if (!envelope.hasIntersect(f.getEnvelop())) continue;

            if (f instanceof Shape)
            {
                Shape shape = (Shape)f;
                if (envelope.hasIntersect(shape.getEnvelop()))
                {
                    fun.execute(f);
                }
            }
            else
            {
                fun.execute(f);
            }
        }
    }
    
    @Override
    public void find(VisitFunc fun)
    {
    	for (Feature f : _features)
        {
            if (!fun.execute(f)) break;
        }
    }
    
    @Override
    public void each(VisitAction fun)
    {
    	for (Feature f : _features)
        {
            fun.execute(f);
        }
    }

}
